Holocephali (helhuvudsfiskar) (chimaeras) >
Chimaeriformes (Chimaeras) >
Chimaeridae (Shortnose chimaeras or ratfishes)
Etymology: Hydrolagus: hydro-, combining form of hydor (Gr.), water; lagos (Gr.), hare, i.e., “water rabbit,” probably referring to three pairs of tooth plates, which tend to protrude from the mouth like a rabbit’s incisors (See ETYFish); bemisi: In honor of ichthyologist William E. Bemis, now at Cornell University, “longtime mentor and friend, and a leader in ichthyological research” (See ETYFish).
Eponymy: Dr William E Bemis is a vertebrate anatomist, currently Professor of Ecology and Evolutionary Biology at Cornell University, the university that awarded his first degree (1976). [...] (Ref. 128868), visit book page.
Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
marina djupbottenlevande; djupintervall 400 - 1100 m (Ref. 45044), usually 500 - 700 m (Ref. 45044). Deep-water
Southwest Pacific: New Zealand.
Storlek / Vikt / Ålder
Könsmognad: Lm ?  range ? - ? cm
Max length : 112 cm TL hane/ej könsbestämd; (Ref. 45044)
Kort beskrivning
Bestämningsnycklar | Morfologi | Morfometri
Pale brown coloration fading to white ventrally. Dorsal fin spine reaching to origin of second dorsal fin when depressed; elongated second dorsal fin not indented along its length. Horizontal and hyomandibular lateral line canals sharing a common branch. Caudal filament long and stout (Ref. 45044).
Body shape (shape guide): elongated.
Oviparous (Ref. 205). Eggs are encased in horny shells (Ref. 205).
Livscykel och parningsbeteende
Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver
Didier, D.A., 2002. Two new species of chimaeroid fishes from the southwestern Pacific Ocean (Holocephali, Chimaeridae). Ichthyol. Res. 49(4):299-306. (Ref. 45044)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
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Harmless
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Uppskattningar baserade på modeller
Index för fylogenetisk mångfald (Ref. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00437 (0.00213 - 0.00895), b=3.05 (2.87 - 3.23), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245). |
Trofisk nivå (Ref. 69278) |
3.9 ±0.6 se; based on size and trophs of closest relatives |
Resiliens (Ref. 120179) |
Låg, lägsta populationsfördubblingstid 4,5-14 år (Assuming Fec <100). |
Sårbarhet i fisket (Ref. 59153) |
High to very high vulnerability (66 of 100). 🛈 |